John j



UNITED STATES PATE T @FFICE.

JOHN w. LIND, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO JOI-INI.MORRIS, on SAME PLACE.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 602,340, dated April12, 1898;

Application filed May 21,1897. Serial No- 637,570. (N model.)

To 00% whom it may concern.-

Be it known that I, JOHN W. LIND, of Boston, (Roxbury,) in the countyofSuffolk and State of Massachusetts, have invented certain new and,useful Improvements in Pipe- Wrenches; and I-do hereby declare the following to be a full, clear, and exact description of the invention, suchas will enable others skilled in the .art to which it appertains to makeand use the same.

This invention relates to pipe-wrenches, and has for its object theproduction of a wrench in which shall be combined the advantages ofadjustment for use upon differ- I 5 cut sizes of work presented by themonkeywrench type, with the security of grip and flexibility ofoperation as a pipe-wrench presented by the so-called plier or tongtype. To this end the jaws are furnished with shanks orhandles extendedaway from their respective jaws in proximity to each other and capableof both a lengthwise and an angular movement in adjustment relatively toeach other, means being provided to enable the wrench members to befixed in adjusted longitudinal position, while permitting an angularvariation sufficient to allow the wrench to be turned about a pipe orthe like to get a fresh grip.

0 The various features of my invention will be fully illustrated anddescribed in the accompanying drawings and specification and set forthin the claims.

In the drawings, Figure 1 is a view in side 3 5 elevation of a wrench inthe construction of which myinvention has been embodied. Fig. 2 is afront elevation of the same, and Fig. 3 a view in side elevation of amovable member of the form illustrated in Fig. 1 separate from thewrench.

In the preferred embodiment of my invention selected for illustrationand description the jaws 1 and 4 are suitably connected for manipulationby and in the instance illus 5 trated are shown as formed integral withtheir respective shanks 2 5, the jaw 1 and shank 2 constituting what maybe designated for the sake of convenience as the stationary member ofthe wrench, while reference will be made to the similar part 4 5 by theterm movable member.

As indicated, the members are assembled with the jaws presented inopposed relation, their neighboring faces being suitably curved andserrated, preferably as illustrated, to secure a good grip, while in theposition illustrated the shanks lie extended in substantial parallelism,affording a compact-handle.

Any suitable means may be utilized to prevent lateral displacement ofthe members relative to each other, and as one form of construction toserve this end I have shown one member, in this instance the stationarymember, as slotted from front to rear throughout a considerable portionof its length to receive the movable jaw, which is free at times tochange its position lengthwise of the slot for adjustment to pieces ofwork differing considerably in size. Provision is also made forvariation of the movable member with relation to the other member byforming the same of suitable contour, and preferably the contour will besuch as to permit the shanks of the movable and stationary members tooverlap throughout the greater part of their length, 7 5 in thisinstance the shank 5 being permitted to retire into the slot.

The means to fix the members in fixed longitudinal relation whilepermitting angular variation may take any convenient form, and as onesuch arrangement I have illustrated an auxiliary controlling member 6intermediate the members and to connect them at times. Suchconnection'may be effected suitably by roughening or serrating the shank2, as at 3, and bringing into engagement with this the intermediateportion of the controlling member or rod 6, which is of suitable shapetherefor, a projection 7 serving this purpose in the instanceillustrated, the rod being arranged at its forward end to connect withthe jaw 4 and receive the thrust thereon during operation of the wrench.For the purpose of this connectionin the form shown the jaw 4 at itslower edge, adjacent the shank 5 of the stationary member, enters a slotin the end of the rod 6 and is pinned in place therein. This pin serves,further,to limit the move ment of the movable member rearwardly inthe slot of the stationary member, while on the other side of thestationary member a thickening projection or pin 8 on the movable memberlimits the forward movement of the jaw 4, these limiting means beingpositioned suitably to allow change in the angular relation of themembers.

In operation the auxiliary member 6 can be controlled by one or twofingers of the hand in which the shanks are held, the jaws adjusted inlongitudinal position to the pipe or other work, and there fixed bysurrounding the controlling member with the fingers and grasping ittogether with the shanks. After giving a turn to the pipe if the fingersbe relaxed the jaws upon turning of the wrench will separate slightly byreason of slight change in the angular relation of the members and willslip on the pipe, a renewed grasp of the members causing freshengagement of the work by the jaws for the next turn.

Having thus fully described my invention, I wish it understood that I donot limit myself to the exact construction and arrange ment of partsillustrated, since the same may be varied considerably without departingfrom the spirit of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a pipe-wrench, the combination of a stationary jaw having itsshank slotted, a movable jaw positioned within the slotted shank of thestationary jaw, and capable of longitudinal and angular adjustment withrelation thereto, the shank of the stationary jaw being provided with aseries of teeth, a rod secured atone end to the movable jaw, a lugformed on said rod adapted to engage the teeth of the stationary jawwhen its lower end is contracted, and means for preventing the movablejaw from becoming disengaged from the slotof the stationary jaw,substantially as set forth.

2. The combination of a stationary jaw, having its shank slottedlongitudinally, a movable jaw adapted to move within said slot, a pinextending through the stationary jaw on the outer side of the shank ofthe stationary jaw, a rod secured to the movable jaw on the oppositeside of the shank of the stationary j aw, whereby said jaw is preventedfrom becoming displaced from the slot in which it moves, a series ofteeth formed on the shank of the stationary jaw, and a lug carried bythe rod for engaging said teeth when the opposite end of the rod iscontracted, substantially as set forth.

3. In a pipe-wrench, a plurality of members each comprisingapipe-grippingjaw, and a shank connected rigidly to and to manipulatesaid jaw, said shanks being extended in proximity to each other, andmeans, extended along said shanks, to fix said members in adjustedlongitudinal position relative to each other, while permitting variationin their relative angular position, substantially as de scribed.

4. In a wrench, a plurality of loosely-assembled members each comprisinga jaw and a manipulating-shank; means to prevent displacement of saidmembers; and an auxiliary controlling member extended in proximity tosaid manipulating-shanks, to fix said members in adjusted longitudinalposition, while permitting variation in their angular relation,substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribin g witnesses.

JOHN W. LIND. \Vitnesses:

S. MILNER GIBSON, SAML. W. GREECE, J r.

